tory dunnan joins us from lynn university in boca raton, florida. the first two debates had plenty of action. so what are we expecting tonight in florida, which is one of the the battleground states. >> reporter: this is a very important state. we're expecting to hear a lot of fireworks, back and forth, but the third and final presidential debate is focused on foreign policy. both campaigns spent a lot of time prepping, knowing this is the last opportunity to go in front of a national audience. >> you don't turn national security into a political issue. >> reporter: libya will be in the spotlight following the attack on the consulate. the president and mitt romney within the face to face in die bait number two. expect more heated changes tonight. >> the president, the day after flying to las vegas for a political fund-raiser. >> reporter: iran and the threat of nuclear weapons. no president had been tougher on iran. romney had criticized president obama. >> will pre vent them from acquiring nuclear capability. >> reporter: with foreign policy on the